Home
Class 11
CHEMISTRY
2g of NaOH per 250 mL of solution is add...

`2g` of `NaOH` per `250 mL` of solution is added to a buffer solution of buffer capacity `0.2`. Then the change in pH is

A

`0.5`

B

1

C

1`.5`

D

`2.0`

Text Solution

Verified by Experts

The correct Answer is:
B
Buffer capacity
`=("no. of moles of an acid added per lit solution")/(P^(H)"change")`
`P^(H)"change"=(40)/(0.2)=(0.2)/(0.2)=1`
Promotional Banner

Topper's Solved these Questions

  • ACIDS & BASES

    NARAYNA|Exercise EXERCISE-II (H.W.) (SOLUBILITY PRODUCT & COMMON ION EFFECT)|18 Videos

  • ACIDS & BASES

    NARAYNA|Exercise EXERCISE-III|43 Videos

  • ACIDS & BASES

    NARAYNA|Exercise EXERCISE-II (H.W.) (IONISATION OF ACIDS & BASES, DEGREE OF IONISATION & IONIC PRODUCT)|6 Videos

  • 14TH GROUP ELEMENTS

    NARAYNA|Exercise Subjective Questions|6 Videos

  • ALKANES

    NARAYNA|Exercise Integer Answer Type|7 Videos

Similar Questions

Explore conceptually related problems

On diluting a buffer solution, its pH

Buffer Solution || Acidic Buffer

0.002 moles of an acid is added to a litre of buffer solution, decreases the pH of the buffer by 0.02 . Then the buffer capacity is

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. Which solution is not a buffer solution ?

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. The least change in pH on adding 0.01 mol of HCI to 1 litre of conc. HCI solutiions will be in case of:

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. How many moles of strong acid should be added to best buffer of Q4 to decrease pH byu one unit:

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. Which species has the lowest concentration in a solution prepared by mixing 0.1 mole each of HCN and NaCN in 1 L solution? K_(a)(HCN)=10^(-10)

When 0.1 mole of an acid is added to 2 L of a buffer solution, the P^(H) of the buffer decreases by 0.5 . The buffer capacity of the solution is